1212202231 has 2 divisors, whose sum is σ = 1212202232. Its totient is φ = 1212202230.

The previous prime is 1212202219. The next prime is 1212202249. The reversal of 1212202231 is 1322022121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212202231 - 2²³ = 1203813623 is a prime.

It is a super-2 number, since 2×1212202231² = 2938868497682754722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212202031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606101115 + 606101116.

It is an arithmetic number, because the mean of its divisors is an integer number (606101116).

Almost surely, 2^1212202231 is an apocalyptic number.

1212202231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212202231 is an equidigital number, since it uses as much as digits as its factorization.

1212202231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1212202231 is about 34816.6947167591. The cubic root of 1212202231 is about 1066.2483194198.

Adding to 1212202231 its reverse (1322022121), we get a palindrome (2534224352).

The spelling of 1212202231 in words is "one billion, two hundred twelve million, two hundred two thousand, two hundred thirty-one".